Enables fatty acid elongase activity. Involved in fatty acid elongation, monounsaturated fatty acid and fatty acid elongation, saturated fatty acid. Predicted to be located in endoplasmic reticulum. Predicted to be part of fatty acid elongase complex. Predicted to be integral component of endoplasmic reticulum membrane. Orthologous to human ELOVL6 (ELOVL fatty acid elongase 6). [provided by Alliance of Genome Resources, Apr 2022]